The author is a Bard of the Gorsedd of Cornwall, and lecturer in the Faculty of Celtic Studies, University College, Dublin. This 544-page dictionary is the most comprehensive English-Cornish dictionary ever published, containing over 25,000 headwords, many with extensive examples of words in context. The dictionary is 72% larger than Nance's 1938 dictionary, and utilizes Unified Cornish Revised orthography. This second edition contains new vocabulary from the recently-discovered play Bewnans Ke. The section on Cornish place-names has also been expanded and revised.

As with any dictionary, errors and omissions are inevitable. Corrections and additions to the dictionary can be found on the online addenda and errata page which is expected to be updated as necessary.